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W. vK. JENNB.' TYPE WRI'IINGy MACHINE..

N0.596,s71. Patentedne. 28,1897.

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2 Sheets-Sheet 2,

W. K. JENNE.

TYPE WRITING MACHINE. No. 596,371. Patented Deo. 28,1897.

.M5 AI'Z. T

UNITED STATES ATENT Enron.

VILLIAM K. JENNE, OF ILION, NEV YORK,.ASSIGNOR TO THE VYCKOFF, SEAMANS t BENEDIGT, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 596,371, dated December 28, 1897.

Application led June 23, 1879. (No model.)

York, have invented certain new and useful,

Improvements in Type-Writing Machines, of which the following is a specification.

, My invention relates to type-writing machines g and it consists in various features, details, and combinations hereinafter set forth.

In the accompanying drawings, Figure 1 is a perspective view of a type-writer embodying myinvention; and Figs. 2 to 12, inclusive, views illustrating various details and hereinafter referred to in connection with the description of said parts.

The improvements pertain more particularly to type-writers in which two printingcharacters are carried by a single type-bar and in which the platen or paper roll is for that reason made movable laterally or at right angles to its axis in order to bring it properly over one or the other printing-character.

` In the drawings, A indicates the frame of the machine, comprising a rectangular base, a series of posts or uprights, and a top plate, which latter is formed with a large central opening B.

At ornearits rear side the base of the frame A is provided with a depending rib C3, Fig. 12, which extending across the base from side to side forms a fulcrum for a series of lingerkey levers C of the second order, as shown in Fig. 12.

Each finger-key lever C is connected by a link O4 with one or'anoth er of a series of typebars B, which are levers of the first order, having one quite short arm, to which the links are attached, and a long arm, at the outer extremity of which is placed the double printing character or type, as heretofore. The type-bars are carried in suitable hangers grouped fin l circular series around the opening B.

Depending from the top plate of frame A, near its rear, is ahanger-plate A2, in which is pivotally supported an oscillating elbow-lever G2, the upright arm or member of which carries the usual letter-space dogs, while from the forwardly-projecting horizontal member thereof is suspended a bar G, commonly called the universal bar, which passes beneath and rests against the under side of the finger-key levers C. From this arrangement it follows that the depression of any fingerkey lever will cause the rocking of the oscillating frame G2, moving the rigid letter-space dog into and the yieldingletter-space dog out of alinement with the letter-space rack-bar, as usual.

Upon referring to Fig. 12 it will be sec'n that the fulcrums of the finger-key levers C are at one end of said levers and the fingerbuttons C2 are at the opposite ends, and it will also be observed that universal bar G and oscillating letter-space frame or lever G2 are located between the fulcrum-rib C3 and the connections of the links C4 with the iinger-key levers. The finger-buttons C2 are arranged in rows or tiers at different distances from the fulcrum-rib C3; but the leverage is made practically uniform by properly locating the attachments connecting the links C4 with thekey-levers C, as indicated in Fig. 1. The oscillating lever or frame G2 is normally pressed back bya spring, as usual, this and various other details being omitted from the drawings because of ordinary construction and arrangement.

The top plate of the frame A is formed with lateral arms or extensions, from which :rise standards or ears, by which are supported the ends of a rod A3, as shown in Fig. 1. This rod is of the form in cross-section shown in Fig. 3-that is to say, its front and rear faces are beveled or inclined toward each other from about thehorizontal plane of its axis upward, a narrow flattened space being left between the beveled faces at the upper side.

The rod or rail A3 is designed to support the rear side of a traveling paper-carriage L, which is formed with perforate ears to loosely encircle said rod and is furnished with rollers L2, V-grooved, as in Fig. 3. The walls of the grooves of rollers L2 have the same inclination as the beveled faces of rod or rail A3, but the groove is of such depth that its bottom does not make contact with the crest of rod or rail A3. From this it will be seen that the rollers seat themselves closely and firmly upon the guide rod or rail and preclude lateral play between the parts, thus insuring a straight and steady travel of the carriage and consequent good alinement of the printing.

The carriage L is supported at its front by a roller L, which runs upon the upper face of the top plate of frame A.

As mentioned, the paper roll or platen requires to be shifted bodily at right angles to the line of travel of the carriage to bring the printing-point over one or the other of the two printing-characters of a typebar, and to accomplish this readily and insure accuracy of adjustment I adopt the construction illustrated in Figs. 1, 4, and 7. In these figures N N indicate two slides, respectively fitted to the end bars of the frame or carriage L and free to slide thereon. The slides N N move in the direct-ion of their length toward and from the front and rear of the machine, the keyboard being regarded as the front.

The slides N N are connected bya rod R2, seated at its ends in blocks or lugs R, and each slide is formed or furnished with two upright cars or standards Nl and N2. The ears N serve to sustain the journals of the platenroll Q, and to each ear N2 is pivoted a triangularblock O3, the two blocks being connected at their upper ends by a rod P, as shown in Fig. l. From the rod P a flat bar P extends forward and downward, its end being carried through a guide P2 on the front bar of the frame of carriage L, Fig. l.

From the guide-barP a rod or stem P12 extends downward to a point slightly above the top plate of the frame, where it terminates in a crotch or yoke P3.

P4 indicates a cylindrical rod carried above the top plate of the machine bythe upper arms of two elbow-levers P5, rigidly secured upon a common shaft P6, carried in hangers or bearings beneath the top plate. The elbow-levers P5 have their lower arms arranged to project in opposite directions from the shaft P6, as shown in Fig. l, one toward the front and the other toward the rear of the machine, and each is connected by a link P7 with a shift-key lever specially provided for it.

By reason of the arrangementj ust described it will be seen depression of the shift-key lever connected with one of the levers P5 will move rod P'l rearwardly, while depression of the shift-key lever attached to the other will move said rod forwardly. The yoke or crotch P3 straddles rod Piand moving therewith carries the slide P and the rod P with it, the effect of which is that the blocks O3 are rocked upon their pivots as far as they are free to go and then are moved bodily, carrying with them the slides N N and the parts mounted thereon.

Each slide N is formed with a slot N2, through each of which slots project two short studs or posts M2 M2, located at such distance apart as to allow a limited play of the slides N before the end walls of the slots bear against said studs or posts.

Each block O3 has pivoted to it two hooks or dogs O O, the free ends of which project in opposite directions, as shown in Figs. l and Ll. These hooks rest upon short studs O4, projecting from the face of each block O3 when the blocks are in a medial or upright position; but when the blocks are tipped, as in Fig. 4, one hook is lifted up and the other is permitted to descend, as indicated, the free hook being always on the advancing side of block O2 and of rod P4.

The purpose of the hooks is to engage one or the other of the posts M2 and to lock the shifting carriage N N R2 in one or the other of its two positions, the free hook riding over and engaging with the outer face of the post or stud, as shown in Fig. 4c.

It will be observed that the mere depression of the appropriate finger-shift-key lever rocks the levers P5, moves slide P', rocks the blocks O2, lifts one set of hooks O and disengages them from their studs or posts M2, moves the slides N N with the platen-roll and attendant parts rearward or forward, as the case may be, and carries the other pair of hooks O over and into locking engagement with the second set of studs. In this way the platen is not only quickly shifted, but its movement is accurately determined by the length of the slots and it is firmly locked in position, thus insuring proper alinement and clean unblurred printing.

In order that the movements of the supplemental carriage or shifting platen-frame N N R2 may be free and easily effected, the end bars of the carriage-frame L are provided with rollers M, the peripheries of which project very slightly above said end bars and sustain the slides N N, as shown in Figs. l and 4 and indicated by dotted lines in Fig. '7. This provision enables the operator to shift the platen through the expenditure of little or no more force than is required to actuate one of thc type-bars, which is a matter of importance, greatly facilitating the rapid operation of the machine.

Fig. 6 shows the underside of one end of the shifting carriage and parts carried thereby.

Q is the platen or paper roll, and R2 the rod connecting the slides N N.

W is the reversed scale, and S is a roller which presses the paper against the platen or paper roll.

The roller S has the ends of its shaft S2 or axle carried in slots N4 in the slides N, in which slots it has a limited play toward and from the platen. It is furnished at its ends with pulleys S2, one of which is shown in Fig. 6. The rod R2 also carries two loose pulleys S2, about which pass rubber bands S, which, passing beneath the platen, are also carried about the pulleys S2 on the ends of roller S'. The upper folds of the bands S bear against the platen or against the paper thereon, and hold it to the platen, while the lower folds or lengths of said bands pass clear of the upper folds and thus avoid friction or retardation.

To protect the bands S, there is provided for each a shield-plate V, Figs. 6 and 10, said IOC) IIO

plates serving also to carry the reversed scale-plate W. I As shown in said igures,each plate comprises two parallel leaves or arms V4 and V5 and an upturned lip V3 and is furnished at its forward end with an elongated hole or slot V6 to receive a fastening-screw V2.

Each shield-plate V is carried by a block U, said blocks encircling the rod R2 and being clamped at any desired point thereon by means of a set-screw U2, Fig. ll.

The lips V3 serve to prevent the front pulleys S2 on rod R2 from vmoving laterally out of line with the arms or leaves V4, which latter pass beneath and protect the carryingbands S.

The arms V5 serve to support' the reversed scale-plate W, which may be accurately adjusted through proper setting of the blocks U, and by reason of the slotting of the ends of the shield-plates V to receive the fastening-screws V2.

D, Figs. 2 and 9, indicates a shaft or aXle carried in suitable bearings, one of which is in the hanger A2, and secured upon this shaft is a worm-wheel E.

E2 indicates a worm or screw meshing with the wheel E and serving to rotate said wheel or to hold it against rotation, as required, said worm or screw being carried by a shaft mounted in a suitable sleeve or bearing and provided with a small crank or handle by which to turn it.

D2 indicates va cam or scroll shapeddrum, shell, or casing loosely placed upon shaft D, but connected therewith through the medium of an interposed coiled spring D3, one end of which is made fast to the shell and the other to turn the shell or casing in one direction and to cause a strap or band T to Awind upon its exterior cam-surface, the band having one end attached to the outermost point of the cam or scroll, as indicated in Fig. 8. The other end of the band T is attached to carriage L. Hence as the spring turns the drum or shell D2 the carriage is drawn forward in the direction necessary for letter -spacing The tension of spring D3 may be varied by turning the worm or screw E2 and thereby rotating Worm-wheel E and shaft D.

Vhen the spring is coiled to the greatest extent which it attains, the point or extremity of the scroll or cam drum D2 is at such elevation that the'band T is free from its periphery, or nearly'so; but as the shell or drum D2 turns the band winds upon its periphery and approaches nearer and nearer to 'the axis of rotation. It will be seen that by reason of this arrangement the leverage of the shell is least when the tension of the spring is greatest and greatest when the tension of the spring is least. Hence the pull of the spring as exerted upon the carriage is uniform throughout and the stroke required to actuate the spacing-dogs'is the same throughout `the travel of the carriage. This is a feature of great importance, because if the force required to operate the letter-space dogs and consequently the finger-key levers varies the impression will be irregular, the wear will be uneven, and the speed of operation will be materially lessened.

By turning the worm E2 in one or the other direction the tension of spring D3 may be varied as desired.

Loosely mounted upon the shaft or aXle D by the side of shell or drum D2 isa combined ratchet-wheel and bevel-pinion, (shown in Figs. 8 and 9,) through which latter motion is given to a second bevel-pinion secured upon a shaft H, carried in suitable bearings at the rear side of the machine below the top plate.

The shell D2 carries a spring-pressed pawl which engages with the ratchet-wheel when the shell turns to advance the carriage, but which rides back over the teeth of the ratchet when the rotation is reversedin receding the carriage.

Shaft H is capable of longitudinal adjustment and is provided with means for holding it at any desired adjustment. The pinion through which it is rotated is fixed against movement other than rotation, the shaft H sliding through it when being adjusted.l

Upon shaft H are two other bevel-pinions, so located that when the shaft is at either eX- treme of its longitudinal movement one or the other of said pinions shall mesh with a like pinion on one or thefother of two ribbonspool shafts H2 H2, extending horizontally beneath the top plate of frame A, perpendicular to shaft H.

The shafts H2 are carried in suitable bearings and are grooved longitudinally, as shown in Fig. 9. Each shaft H2 carries a ribbonspool I, having a spur or feather to enter the groove thereof, whereby the spool is caused to rotate with, butis permitted to slide upon, the shaft, which is made of adequate length for the purpose.

J indicates an oscillating frame comprising a horizontal rock-shaft and two upright arms, as shown in Fig. l, said shaft being journaled or carried in bearings in the main frame and the upper ends of the arms beingshouldered and carried through perforations in slotted slides J2, held beneath the top plate of the frame by guide-screws or like means. Each slide J2 carries a bent-wire yoke K K2 of the form illustrated in Figs. 1 and 9-that is to say, it comprises a depending loop K at each end of the spool and bearing lightly against the same and a raised cross-bar K2 above the spool and serving as a guide and support for the inking-ribbon, which passes up over the cross-bars of the two guides and is stretched between them close beneath the platen or paper roll. The two slides J2, being connected through the oscillating frame J, move in unison. Hence if either spool be moved along its shaft the other willv be simultaneously and equally moved and thus the ribbon will be caused to travel in a straight line parallel with the front of the machine.

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The key-levers C are furnished with fingerbuttons C2, as usual.

I claiml. In a type-Writin g machine, the combination of a paper-carriage; a spring drum or barrel having a cam or snail-shaped surface; a flexible band attached to the carriage and arranged to Wind upon the snail-shaped surface of the drum; printing devices; spacing mechanism for holding and releasing the carriage to permit a step-by-step advance; and a series of finger-key levers serving to actuate the printing devices and to control the spacing mechanism; whereby the power required to depress the finger-key levers, to control the spacing mechanism and to give a proper printing im pression is maintained uniform throughout the travel of the carriage.

2. In a type-Writing machine, the combination of an inking-ribbon; ribbon-spools adapted to turn upon their axes and to move longitudinally thereof; guides adapted to embrace and to hold in place the ribbon-spools and ribbon; and a movable frame connected with said guides and serving to effect a simultaneous and equal movement of both spools.

3. In a type-Writing machine, the combination of a supporting bed or plate; a carriage L, movable in a line parallel with the front of the machine; rollers M carried by the end bars of the frame of said carriage; and a supplemental frame provided With a platen Q and having its end bars N supported upon the rollers M of the primary carriage, substantially as described and shown.

4. In a type-Writing machine, the combination of a primary paper-carriage, adapted to move in the direction of the printing-line; a secondary paper-carriage carried by the primary carriage and movable over the same at right angles to the printing-lines; stops to limit the movements of the supplemental carriage; and hooks to engage said stops and hold the supplemental carriage in its adj usted positions.

5. In combination with the primary carriage having stops M2 M2; asupplemental carriage a rocking block O3, mounted upon the supplemental carriage; and provided With studs O4; and hooks O pivotally attached to the block O3 and adapted to engage alternately with the stops M2 M2.

G. In combination with carriage L, supplemental carriage N N, R2; rocking blocks O3 carried by the supplemental carriage and provided With hooks O and studs O4; rod P connecting the blocks O2 and provided With guidebar P; rod P2 and yoke P3 carried by bar P; rod P4 fitting Within the yoke P3; elbow-levers P5 supporting the rod P4; and fingerkeys connected with and serving to rock said levers, substantially as set forth.

7. In a type-Writing machine, the combination of a platen shiftable at right angles to the printing-line, and means for locking said platen in its normal position.

8. In a type-Writing machine, the combination of a platen shiftable at right angles to the printing-line, and means for locking said platen in its shifted position.

i). In a type-Writing machine, the combination of a platen shiftable at right angles to the printing-line; means for locking said platen in its normal position; and means for locking the platen in its shifted position.

l0. Ina type-Writingmachine, the combination of a platen shiftable at right angles to the printing-line; a vibratory shifter-bar parallel with the platen; connections between the platen and shifter-bar; a shift-key lever at the keyboard; and connections between the shifter-bar and the shift-key lever.

Il. In a type-Writing machine, the combination of a primary paper-carriage movable in the direction of the printing-line a secondary carriage supported by the primary carriage and movable thereon at right angles to the printing-line; a vibratory shifter-bar parallel with the printing-line; a crotch or yoke carried by the secondary carriage and arranged to straddle the shifter-bar; and a shift-key connected with the shifter-bar and serving to move the same laterally.

12. In a type-Writing machine, the combination of a longitudinally-traveling platen capable also of transverse movement; a shifterbar extending parallel with the platen; and a finger-key connected With the shifter-bar and serving to shift it and the platen transversely at any and all points in the travel of the platen.

13. In a type-Writing machine,the combination of alongitudinally-traveling platen; and a transversely-movable shifter-bar parallel therewith and mounted in the frame of the machine, and so connected With the platen as to shift the same transversely or at right angles to its axis, at any and all points in the travel of the carriage.

Il. In a type-Writin g machine, the combination of a longitndinally-traveling platen, and a shifter-bar at least as long as the travel of the platen, mounted in the main frame, and so connected to the platen as to shift the same transversely to its axis at any and all points in the travel of the platen.

I5. In a type-Writing machine,the combination of a longitudinally-traveling platen; a shifter-bar connected with the platen and serving to shift the same transversely; and rocker-arms for carrying said shifter-bar.

IG. In a type-Writing machine,the combination of a longitudinally-traveling platen; a shifter-bar connected with the platen and serving to shift the same transversely; rockerarms for carrying the shifter-bar; and a keylever for moving the shifter-bar.

WILLIAM K. JENNE.

Vitnesses:

F. ARMsTRoNe, Trios. IARKES.

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